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E. PRICE.

TEETER BOARD.

APPLIBATION FILED APR. a. 1919.

3,320,? m, Patented Nov. 4, 1919.

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EDWARD PRICE, 01 LOS ANGELES, CALIFORNIA.

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Specification of Letters Patent.

Yatented News, 1919.

ApplioationflledAPrilS,191.9. Serial 110,287,319.

To all whom it may concern;

Be it known that I EDWARD Pnroiii a citi- 4 zen of the United gtates; residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Teeter-Boards, of

' which the following is a specification.

as f

tion to mountmg.

This invention relates to teeter-boards of that class in which the teeter-board is provided with an overbalanced or weighted end portion whereby it may be operated by one person.

It is the object of this invention to provide a teeter-board of the above character embodying means whereby the weighted end portion thereof may be normally held in an elevatedposition and adapted to be operated and controlled from the portion of the teeter-board opposite the weighted porermit downward movement of said weighte portion, or to hold it against downward movement at the will of the operator.

Another object is to rovide the teeterboard with means for a sorbing shock and effectin a rebound action at the terminus of the ownward movement of said teeterboard.

Other objects will appear hereinafter.

The invention is illustrated in the accompanying drawings in which:

Fi re 1 is a view of the teeter-board as seen in side elevation.

Fig. 2 is a perspective view of same illustrating the manner of its operation.

More specifically 5 indicates a rockable member which may be of any suitable construction, but is here shown as consisting of a plank fitted with trunnions 6 intermediate its ends which trunnions are supported in bearings 7 carried on a suitable frame 8. One end portion of. the rockable member is desi ed to be counter-weighted or overbalanced, and for this purpose is here shown asdprovided with a box 9 disposed at the en of the rockable member and adapted to receive weights 10 of any suitable character, which weights act normally to maintain the overbalanced end portion of the rockable members in a lowered position. Means are provided for holding the weighted end of the rockable member in an elevated position so as to dispose the underbalanced end portion of the rockable member in a lowered position to ermit easy mounting and disglhis means is here shown as contact with the ground surface.

ner that it may swing vertically in and out of its dependent osition 'in a direction longitudinally of t e' rockable member. If

deemed, the hinge 12 may be a spring hinge so as to act to normally maintain the hinged leg in a dependent osition, but ordinarily the weight of the hinged leg will be suflicient to normally suspend it in a vertical position. Connected with the hinged leg is a cord 13 which passes u wardly through a guide member 14 on the ox 9 and. thence extends rearwardly to a 0st 15 disposed adjacent to the unweighte end of the rockable member, but spaced from the end thereof to provide seatin room.

As a means for cus ioning' downward movementof the weighted end of the rockable member at the terminus of such movement, a spiral spring 16 is mounted on the underside of the plank beneath the box 9 and projects downwardly so as to come in spring also serves to exert a rebound action on impact with the'ground to give an initial upward impulse to the weighted end of the rockable member when in operation, thus facilitating the control of the teeter by the person ridingthereon. The spring 16 is carried on a block 17 disposed on the under side of the plank and arranged adjacent to the hinged leg so as to serve as a stop for the latter. a

. In the operation of the invention sufiiient weight is placed in the box to approximately counter-balance the weight of the personal rider whereupon the rider mounts the seal; portion of the rockable member between the post and the end thereof.

This

On pulling upon the cord 13 the leg 11 will be swung outwardly so as to clear the supporting surface, thus'permittin rocking movement of the teeter-board. n downward movement of the weighted end of the of the teeter-board. The hinged leg is held in an elevated position duri' the rocking operation by the cord 13 WhlC 211;, if de-' sired, be hitched to the post 15. owever,

changes ma be made in the details of construction, t ough without departing from the spirit and scope of the inventlon as set forth in the appended claims.

I claim:

1'."In a teeter-board, a rockable member -having a weighted and overbalanced end portion, a rebound element arranged to act on the overbalanccd end portion of said rockable member at the terminus of its downward movement, means for normally holding the overbalanced end portion'in an elevated position, and means for releasing said last named means from the other end portion of the rockable member.

2. In a teeter-board, a rockable member, a counterweight on one end thereof, means for normally holding the counterweighted end.

of said rockable member an elevated position, and means for releasm said last named means from the other en portion of the rockable member.

3. In a teeter-board, a rockable member having a weighted end portion, a pivoted leg on the weighted portionfor holding said weighted. end portion in an elevated position, and means operable from the other end portion for throwing said leg in and out of an operative position. i

' 4. In a teeter-board,-a rockable member havin an overbalanced end portion and an under alanced end portion, a normally dependent hinged leg on the overbalanced end portion of said rockable member en ageable with a supporting surface to hold t e overbalanced end portion in an elevated end portion of said rockable member for throwing said hinged 1e out of engagement with its supporting sur ace to emit downward. movement of the over alanced .end portion of the'rockable member.

5. In a teeter-board, a rockable member having an overbalanced end portion and an underbalanced end portion, a normally dependent hinged le on the overbalanced end portion of said roc kable member on ageable with a supporting surface to hold t 0 overbalanced end ortion in an elevated position, means operabie from the underbalanced end portion of said rockable member for throwing said hinged leg out of engagement with its supporting surface to permit downward movement of the overbalanced end portion of the rockable member, and means for absorbing shock and eifecting rebound action on the overbalanced end portion at the terminus of the downward movement thereof.

EDWARD PRICE.

osition, and means operable from the under alanced 

